// Magic Software, Inc.
// http://www.magic-software.com
// Copyright (c) 2000, All Rights Reserved
//
// Source code from Magic Software is supplied under the terms of a license
// agreement and may not be copied or disclosed except in accordance with the
// terms of that agreement.  The various license agreements may be found at
// the Magic Software web site.  This file is subject to the license
//
// RESTRICTED USE SOURCE CODE
// http://www.magic-software.com/License/restricted.pdf

#ifndef MGCLIGHT_H
#define MGCLIGHT_H

#include "MgcColor.h"
#include "MgcObject.h"
class MgcMatrix3;
class MgcVector3;


class MgcLight : public MgcObject
{
    MgcDeclareRTTI;
    MgcDeclareStream;

public:
    virtual ~MgcLight ();

    enum Type
    {
        LT_AMBIENT,
        LT_DIRECTIONAL,
        LT_POINT,
        LT_SPOT,
        LT_QUANTITY
    };

    virtual Type GetType () const = 0;

    MgcColor& Ambient ();
    MgcColor& Diffuse ();
    MgcColor& Specular ();

    bool& Attenuate ();
    MgcReal& Constant ();
    MgcReal& Linear ();
    MgcReal& Quadratic ();

    bool& On ();
    MgcReal& Intensity ();

    virtual void ComputeDiffuse (const MgcMatrix3& rkWorldRotate,
        const MgcVector3& rkWorldTranslate, MgcReal fWorldScale,
        const MgcVector3* akVertex, const MgcVector3* akNormal,
        unsigned int uiQuantity, const bool* abVisible,
        MgcColor* akDiffuse) = 0;

    virtual void ComputeSpecular (const MgcMatrix3& rkWorldRotate,
        const MgcVector3& rkWorldTranslate, MgcReal fWorldScale,
        const MgcVector3* akVertex, const MgcVector3* akNormal,
        unsigned int uiQuantity, const bool* abVisible,
        const MgcVector3& rkCameraModelLocation, MgcColor* akSpecular) = 0;

protected:
    // abstract base class
    MgcLight ();

    MgcColor m_kAmbient;
    MgcColor m_kDiffuse;
    MgcColor m_kSpecular;
    MgcReal m_fConstant;
    MgcReal m_fLinear;
    MgcReal m_fQuadratic;
    MgcReal m_fIntensity;
    bool m_bAttenuate;
    bool m_bOn;
};

MgcSmartPointer(MgcLight);
MgcRegisterStream(MgcLight);
#include "MgcLight.inl"

#endif
